a) \(x\cdot3,4=\frac{1}{3}\)
\(x\cdot\frac{17}{5}=\frac{1}{3}\)
\(x=\frac{1}{3}:\frac{17}{5}\)
\(x=\frac{5}{51}\)
b) \(x:\frac{4}{5}=\frac{5}{2}\)
\(x=\frac{5}{2}\cdot\frac{4}{5}\)
\(x=2\)
c) \(\frac{2}{9}:x=\frac{2}{3}\)
\(x=\frac{2}{9}:\frac{2}{3}\)
\(x=\frac{1}{3}\)